JP2015209823A

JP2015209823A - Vibration type compressor

Info

Publication number: JP2015209823A
Application number: JP2014092674A
Authority: JP
Inventors: 幸浩木村; Yukihiro Kimura
Original assignee: Sawafuji Electric Co Ltd
Current assignee: Sawafuji Electric Co Ltd
Priority date: 2014-04-28
Filing date: 2014-04-28
Publication date: 2015-11-24
Anticipated expiration: 2034-04-28
Also published as: JP6425160B2

Abstract

PROBLEM TO BE SOLVED: To provide a vibration type compressor capable of reducing opening or closing noise of a discharging valve and allowing a pushing-up of the discharging valve by a piston to be carried out even if an over-stroke occurs when the piston is performing a compression stroke.SOLUTION: A discharging valve device 27 is constituted by the first and the second discharging valves 38, 39. The first discharging valve 38 is constituted by a rigidity valve plate 41 and a closing spring 42 for biasing the rigidity valve plate 41 toward a valve seating direction of the valve seat 40. The second discharging valve 39 is constituted by a resilient valve plate 46 for opening or closing a valve hole 45 with the outer end surface of the rigidity valve plate 41. The resilient valve plate 46 is constituted by an annular supporting part 46a fixed to the outer circumferential part of the rigidity valve plate 41, a valve part 46b for opening or closing the valve hole 45 at the outer end surface of the rigidity valve plate 41, a plurality of resilient arms 46c forming an arcuate shape concentric with the valve part 46b to connect between the supporting part 46a and the valve part 46b and slits 46d arranged at both sides of these resilient arms 46c and the valve opening pressure of the resilient valve plate 46 is set to be lower than the valve opening pressure of the rigidity valve plate 41.

Description

本発明は，主として自動車に搭載される冷蔵庫に適用される振動型圧縮機に関し，特に，シリンダブロックと，このシリンダブロックのシリンダ孔に往復動自在に嵌装されてシリンダ孔内にポンプ室を画成するピストンと，このピストンに往復振動を付与する振動源と，前記ポンプ室に隣接する吐出室と，ピストンに設けられる吸入ポートと，ピストンの往復動に応じて前記吸入ポート及びポンプ室間を開閉して，吸入ポートからポンプ室への一方向への気体の流れを生じさせる吸入弁と，ピストンの往復動に応じて前記ポンプ室及び吐出室間を開閉して，ポンプ室から吐出室への一方向への気体の流れを生じさせる吐出弁とを備える振動型圧縮機の改良に関する。 The present invention relates to a vibration type compressor mainly applied to a refrigerator mounted on an automobile, and in particular, a cylinder block and a pump chamber that is reciprocally fitted in a cylinder hole of the cylinder block to define a pump chamber. A piston, a vibration source for applying reciprocating vibration to the piston, a discharge chamber adjacent to the pump chamber, a suction port provided in the piston, and the suction port and the pump chamber according to the reciprocating motion of the piston. A suction valve that opens and closes to generate a gas flow in one direction from the suction port to the pump chamber, and opens and closes the pump chamber and the discharge chamber in accordance with the reciprocating movement of the piston. The present invention relates to an improvement of a vibration type compressor including a discharge valve that generates a gas flow in one direction.

かゝる振動型圧縮機は，下記特許文献１に開示されているように，知られている。 Such a vibration type compressor is known as disclosed in Patent Document 1 below.

特開２０１１−９４５６８号公報JP 2011-94568 A

従来のかゝる振動型圧縮機では，吐出弁を，ポンプ室を囲むようにシリンダブロックの端面に形成される弁座と，この弁座に着座し得る剛性弁板と，この剛性弁板を前記弁座との着座方向に付勢する閉じばねとで構成している。こうしたものでは，ピストンの往復動により吐出弁が開閉するときは，剛性弁が弁座を振動的に叩くことになり，これが騒音の一因になっている。 In the conventional vibration type compressor, the discharge valve has a valve seat formed on the end face of the cylinder block so as to surround the pump chamber, a rigid valve plate that can be seated on the valve seat, and the rigid valve plate. It is comprised with the closing spring urged | biased by the seating direction with a valve seat. In such cases, when the discharge valve opens and closes due to the reciprocating movement of the piston, the rigid valve vibrates the valve seat, which contributes to noise.

本発明は，かゝる事情に鑑みてなされたもので，吐出弁の開閉時，発生する騒音を大幅に低減することができ，しかもピストンが圧縮行程時，オーバストロークしても，ピストンによる吐出弁の突き上げを許容して，故障を回避し得るようにした前記振動型圧縮機を提供することを目的とする。 The present invention has been made in view of such circumstances, and can greatly reduce the noise generated when the discharge valve is opened and closed, and even if the piston is over-stroked during the compression stroke, It is an object of the present invention to provide the above-described vibration type compressor that allows the valve to be pushed up to avoid a failure.

上記目的を達成するために，本発明は，シリンダブロックと，このシリンダブロックのシリンダ孔に往復動自在に嵌装されてシリンダ孔内にポンプ室を画成するピストンと，このピストンに往復振動を付与する振動源と，前記ポンプ室に隣接する吐出室と，ピストンに設けられる吸入ポートと，ピストンの往復動に応じて前記吸入ポート及びポンプ室間を開閉して，吸入ポートからポンプ室への一方向への気体の流れを生じさせる吸入弁と，ピストンの往復動に応じて前記ポンプ室及び吐出室間を開閉して，ポンプ室から吐出室への一方向への気体の流れを生じさせる吐出弁装置とを備える振動型圧縮機において，前記吐出弁装置を第１及び第２吐出弁より構成し，前記第１吐出弁を，前記ポンプ室を囲むようにシリンダブロックの端面に形成される弁座と，この弁座に着座し得る剛性弁板と，この剛性弁板を前記弁座との着座方向に付勢する閉じばねとで構成し，前記第２吐出弁を，前記剛性弁板の中心部に設けられて前記ポンプ室及び吐出室間を連通する弁孔と，前記剛性弁板の外端面側で前記弁孔を開閉する弾性弁板とで構成し，その弾性弁板を，前記剛性弁板の外周部に固定される環状の支持部と，前記剛性弁板の外端面側で前記弁孔を開閉する弁部と，この弁部と同心の円弧状をなして前記支持部及び弁部間を連結する複数の弾性腕部と，これら弾性腕部の両側に設けられ，前記弁部の開き時，前記弁孔及び吐出室間を導通させるスリットとで構成し，前記弾性弁板の開弁圧力を，前記剛性弁板の開弁圧力よりも低く設定したことを第１の特徴とする。尚，前記振動源は，後述する本発明の実施形態中の駆動コイル１９に対応する。 In order to achieve the above object, the present invention provides a cylinder block, a piston that is reciprocally fitted in a cylinder hole of the cylinder block to define a pump chamber in the cylinder hole, and a reciprocating vibration in the piston. The vibration source to be applied, the discharge chamber adjacent to the pump chamber, the suction port provided in the piston, and the suction port and the pump chamber are opened and closed according to the reciprocation of the piston, and the suction port is connected to the pump chamber. Opening and closing the pump chamber and the discharge chamber according to the reciprocating movement of the piston and the suction valve that generates a gas flow in one direction, and generates a gas flow in one direction from the pump chamber to the discharge chamber. In a vibration type compressor including a discharge valve device, the discharge valve device is constituted by first and second discharge valves, and the first discharge valve is formed on an end surface of a cylinder block so as to surround the pump chamber. A valve seat, a rigid valve plate that can be seated on the valve seat, and a closing spring that urges the rigid valve plate in the seating direction with respect to the valve seat, and the second discharge valve is configured as the rigid valve plate. A valve hole provided at the center of the valve plate and communicating between the pump chamber and the discharge chamber; and an elastic valve plate that opens and closes the valve hole on the outer end surface side of the rigid valve plate. The annular support portion fixed to the outer peripheral portion of the rigid valve plate, the valve portion that opens and closes the valve hole on the outer end surface side of the rigid valve plate, and an arc shape concentric with the valve portion. A plurality of elastic arm portions that connect between the support portion and the valve portion; and slits that are provided on both sides of the elastic arm portions and that conduct between the valve hole and the discharge chamber when the valve portion is opened. The first feature is that the valve opening pressure of the elastic valve plate is set lower than the valve opening pressure of the rigid valve plate. The vibration source corresponds to a drive coil 19 in an embodiment of the present invention described later.

また本発明は，第１の特徴に加えて，前記閉じばねの付勢力により，前記支持部を前記剛性弁板に押圧固定したことを第２の特徴とする。 In addition to the first feature, the present invention has a second feature that the support portion is pressed and fixed to the rigid valve plate by the biasing force of the closing spring.

さらに本発明は，第２の特徴に加えて，シリンダブロックの端部外周に摺動可能に嵌合するガイド部材に，前記弁座と協働して前記剛性弁板及び弾性弁板を挟持し得る内向き鍔部を設け，前記閉じばねの付勢力により，前記ガイド部材を前記剛性弁板及び弾性弁板と共に前記弁座側に付勢したことを第３の特徴とする。 Furthermore, in addition to the second feature, the present invention sandwiches the rigid valve plate and the elastic valve plate in a guide member slidably fitted on the outer periphery of the end of the cylinder block in cooperation with the valve seat. A third feature is that an inward flange portion is provided and the guide member is biased to the valve seat side together with the rigid valve plate and the elastic valve plate by the biasing force of the closing spring.

本発明の第１の特徴によれば，ピストンの通常の往復行程時には，第２吐出弁の弾性弁板の開閉により，ポンプ室から吐出室へと冷媒ガスを送ることができる。しかも，その弾性弁板は，第１吐出弁の剛性弁板の外周部に固定される環状の支持部と，剛性弁板の外端面側で剛性弁板の弁孔を開閉する弁部と，この弁部と同心の円弧状をなして支持部及び弁部間を連結する複数の弾性腕部と，これら弾性腕部の両側に設けられ，前記弁部の開き時，前記弁孔及び吐出室間を導通させるスリットとで構成されるので，弾性弁板の弁部は慣性重量が小さいことから，剛性弁板への着座音が極めて小さく，吐出弁装置の静粛性を確保することができる。しかも弁部の開き時，弁孔を通過した気体は，弁部に当たった後，弁部と同心の円弧状をなすスリットから吐出室に移行することで，放射状に広がることになるため，気体に含まれる潤滑オイルを遠心分離することができる。 According to the first feature of the present invention, during the normal reciprocating stroke of the piston, the refrigerant gas can be sent from the pump chamber to the discharge chamber by opening and closing the elastic valve plate of the second discharge valve. Moreover, the elastic valve plate includes an annular support portion fixed to the outer peripheral portion of the rigid valve plate of the first discharge valve, a valve portion that opens and closes the valve hole of the rigid valve plate on the outer end surface side of the rigid valve plate, A plurality of elastic arm portions concentric with the valve portion to connect the support portion and the valve portion, and provided on both sides of the elastic arm portion, and when the valve portion is opened, the valve hole and the discharge chamber Since the valve portion of the elastic valve plate has a small inertia weight, the seating sound on the rigid valve plate is extremely small, and the silence of the discharge valve device can be ensured. In addition, when the valve part is opened, the gas that has passed through the valve hole spreads radially by hitting the valve part and then moving radially from the slit concentric with the valve part to the discharge chamber. The lubricating oil contained in can be centrifuged.

ピストンが圧縮行程時，オーバストロークした場合には，第１吐出弁の剛性弁板がピストンにより閉じばねの付勢力に抗して押し開けられ，ピストンのオーバストロークが許容され，剛性弁板に支持部を固定される弾性弁板が損傷を受けることもない。 If the piston overstrokes during the compression stroke, the rigid valve plate of the first discharge valve is pushed open against the biasing force of the closing spring by the piston, allowing the piston overstroke to be supported by the rigid valve plate. The elastic valve plate to which the part is fixed is not damaged.

本発明の第２の特徴によれば，弾性弁板の支持部の剛性弁板への固定に，第１吐出弁の閉じばねを使用することで，弾性弁板の支持部の固定構造を簡素化することができる。 According to the second feature of the present invention, the fixing structure of the support portion of the elastic valve plate is simplified by using the closing spring of the first discharge valve for fixing the support portion of the elastic valve plate to the rigid valve plate. Can be

第３の特徴によれば，ピストンが圧縮行程時にオーバストロークして，剛性弁板を突き上げた場合には，ガイド部材がシリンダブロックに対して摺動することにより，ガイド部材に支持される剛性弁板及び弾性弁板の姿勢を安定させることができる。 According to the third feature, when the piston overstrokes during the compression stroke and pushes up the rigid valve plate, the guide member slides with respect to the cylinder block, so that the rigid valve supported by the guide member. The posture of the plate and the elastic valve plate can be stabilized.

本発明の第１実施形態に係る振動型圧縮機の縦断側面図。BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a longitudinal side view of a vibration type compressor according to a first embodiment of the present invention. 図１の２部拡大図。FIG. 2 is an enlarged view of part 2 of FIG. 1. 図２の３矢視拡大図。FIG. 3 is an enlarged view taken along arrow 3 in FIG. 2. 吸入弁の作用図。FIG. 図２の５−５線断面図。FIG. 5 is a sectional view taken along line 5-5 of FIG. 吸入弁の弁板の第１変形例を示す，図３との対応図。FIG. 4 is a view corresponding to FIG. 3 showing a first modification of the valve plate of the intake valve. 吸入弁の弁板の第２変形例を示す，図３との対応図。FIG. 4 is a view corresponding to FIG. 3 showing a second modification of the valve plate of the intake valve. 本発明の第２実施形態に係る振動型圧縮機の縦断側面図。The vertical side view of the vibration type compressor which concerns on 2nd Embodiment of this invention. 図８の９部拡大図。9 is an enlarged view of 9 parts in FIG. 図８の１０−１０線断面図。FIG. 10 is a sectional view taken along line 10-10 in FIG. 8;

本発明の実施の形態を添付図面に基づいて以下に説明する。 Embodiments of the present invention will be described below with reference to the accompanying drawings.

先ず，図１〜図５に示す本発明の第１実施形態の説明より始める。図１において，本発明の振動型圧縮機Ｃは，例えばトラック，バス等の車両等に搭載される冷蔵庫のコンプレッサとして庫体の適所に設置される。この振動型圧縮機Ｃは，筒状容器１と，この筒状容器１に収容される圧縮機本体２とを備えており，筒状容器１の下部に設置用のブラケット３が固着される。 First, the description starts with the description of the first embodiment of the present invention shown in FIGS. In FIG. 1, the vibration type compressor C of the present invention is installed at an appropriate position of a box as a compressor of a refrigerator mounted on a vehicle such as a truck or a bus. The vibration type compressor C includes a cylindrical container 1 and a compressor main body 2 accommodated in the cylindrical container 1, and an installation bracket 3 is fixed to the lower part of the cylindrical container 1.

圧縮機本体２は，円筒状のヨーク４と，このヨーク４の一端にそれを閉塞するように結合されてヨーク４の内部に同心状に配置されるコアポール５と，ヨーク４の他端にそれを閉塞するように結合されるエンドプレート６とを備えており，コアポール５の外周には，永久磁石７が付設される。 The compressor body 2 includes a cylindrical yoke 4, a core pole 5 that is coupled to one end of the yoke 4 so as to close the yoke 4, and is disposed concentrically inside the yoke 4, and is connected to the other end of the yoke 4. And an end plate 6 coupled so as to close the core pole 5, and a permanent magnet 7 is attached to the outer periphery of the core pole 5.

またコアポール５の中心部にはシリンダブロック１０が配置される。このシリンダブロック１０は，その外周から第１取り付けフランジ１１を張り出しており，この第１取り付けフランジ１１がコアポール５の端面に固着されることで，シリンダブロック１０はコアポール５に固定される。また第１取り付けフランジ１１の外端面には，シリンダブロック１０と同軸に並ぶシリンダヘッド１２の第２取り付けフランジ１３がガスケット１４を介して接合される。 A cylinder block 10 is disposed at the center of the core pole 5. The cylinder block 10 protrudes from the outer periphery of the first mounting flange 11, and the cylinder block 10 is fixed to the core pole 5 by fixing the first mounting flange 11 to the end face of the core pole 5. A second mounting flange 13 of the cylinder head 12 aligned coaxially with the cylinder block 10 is joined to the outer end surface of the first mounting flange 11 via a gasket 14.

シリンダブロック１０のシリンダ孔１５には中空円筒状のピストン１７が摺動自在に嵌装される。このピストン１７は，シリンダヘッド１２と反対側の外端部をシリンダ孔１５から突出させており，その外端部には，コイル支持体１８を介して駆動コイル１９が連結される。 A hollow cylindrical piston 17 is slidably fitted into the cylinder hole 15 of the cylinder block 10. The piston 17 has an outer end opposite to the cylinder head 12 protruding from the cylinder hole 15, and a drive coil 19 is connected to the outer end via a coil support 18.

コイル支持体１８は，ヨーク４及び永久磁石７間に配置される円筒状のボビン１８ａと，このボビン１８ａの一端に連なる端壁１８ｂと，この端壁１８ｂにインサート結合された支持板１８ｃとよりなっており，その支持板１８ｃがピストン１７の外端部に圧入及び溶接等により固着され，ボビン１８ａの外周には駆動コイル１９が巻装される。ボビン１８ａは，ヨーク４及び永久磁石７間で軸方向に往復動するようになっている。端壁１８ｂには，その内外を連通する複数の通孔２０が設けられる。 The coil support 18 includes a cylindrical bobbin 18a disposed between the yoke 4 and the permanent magnet 7, an end wall 18b connected to one end of the bobbin 18a, and a support plate 18c insert-coupled to the end wall 18b. The support plate 18c is fixed to the outer end portion of the piston 17 by press fitting, welding, or the like, and a drive coil 19 is wound around the outer periphery of the bobbin 18a. The bobbin 18a reciprocates between the yoke 4 and the permanent magnet 7 in the axial direction. The end wall 18b is provided with a plurality of through holes 20 that communicate between the inside and the outside.

また端壁１８ｂと，エンドプレート６及びシリンダブロック１０との各間には左右一対の共振ばね２１が介装され，これら共振ばね２１はコイルばねよりなっており，圧縮方向に所定のセット荷重が付与される。こうして前記駆動コイル１９はピストン１７に一体的に連結されると共に，一対の共振ばね２１により支持される。 A pair of left and right resonance springs 21 are interposed between the end wall 18b, the end plate 6 and the cylinder block 10, and these resonance springs 21 are coil springs, and a predetermined set load is applied in the compression direction. Is granted. Thus, the drive coil 19 is integrally connected to the piston 17 and supported by a pair of resonance springs 21.

シリンダ孔１５には，ピストン１７によりポンプ室２３が画成される。またピストン１７の中空部は，ヨーク４内に開口する吸入ポート２４とされ，この吸入ポート２４及びポンプ室２３間に吸入弁２５が配設される。またシリンダヘッド１２には，ポンプ室２３に隣接する吐出室２６が設けられ，これらポンプ室２３及び吐出室２６間に吐出弁装置２７が配設される。 A pump chamber 23 is defined in the cylinder hole 15 by a piston 17. The hollow portion of the piston 17 serves as a suction port 24 that opens into the yoke 4, and a suction valve 25 is disposed between the suction port 24 and the pump chamber 23. The cylinder head 12 is provided with a discharge chamber 26 adjacent to the pump chamber 23, and a discharge valve device 27 is disposed between the pump chamber 23 and the discharge chamber 26.

図２及び図３に示すように，吸入弁２５は，弁座部材３０及び弾性弁板３１より構成される。ピストン１７のポンプ室２３に臨む頭部側において，ピストン１７の内周面に環状突起３２が形成される。またピストン１７の頭部の端面には，環状突起３２を底面とする凹部３３が形成され，この凹部３３に弁座部材３０が収容される。弁座部材３０には，その中心部に弁孔３４が設けられると共に，前記環状突起３２の内周側を貫通する円筒状のかしめ部３５が設けられ，そのかしめ部３５を半径方向外方にかしめて，このかしめ部３５と弁座部材３０とで環状突起３２を挟持することで，弁座部材３０は環状突起３２に固着される。 As shown in FIGS. 2 and 3, the intake valve 25 includes a valve seat member 30 and an elastic valve plate 31. An annular protrusion 32 is formed on the inner peripheral surface of the piston 17 on the head side facing the pump chamber 23 of the piston 17. Further, a recess 33 having an annular protrusion 32 as a bottom surface is formed on the end surface of the head of the piston 17, and the valve seat member 30 is accommodated in the recess 33. The valve seat member 30 is provided with a valve hole 34 at the center thereof and a cylindrical caulking portion 35 penetrating the inner peripheral side of the annular protrusion 32, and the caulking portion 35 is radially outward. By caulking, the valve seat member 30 is fixed to the annular protrusion 32 by sandwiching the annular protrusion 32 between the caulking portion 35 and the valve seat member 30.

弾性弁板３１は薄鋼板製であって，弁座部材３０の外周部に固着される環状の支持部３１ａと，前記弁孔３４を開閉する弁部３１ｂと，この弁部３１ｂと同心の円弧状をなして支持部３１ａ及び弁部３１ｂ間を連結する複数本（図示例では２本）の弾性腕部３１ｃと，これら弾性腕部３１ｃの両側に設けられ，弁部３１ｂの開き時，弁孔３４及びポンプ室２３間を導通させるスリット３１ｄとで構成される。支持部３１ａには，放射状に延びる複数の固定片３６が延設され，これら固定片３６により弁座部材３０の外周部を抱き込むことにより，支持部３１ａは弁座部材３０に固着される。 The elastic valve plate 31 is made of a thin steel plate, and includes an annular support portion 31a fixed to the outer peripheral portion of the valve seat member 30, a valve portion 31b for opening and closing the valve hole 34, and a circle concentric with the valve portion 31b. A plurality of (two in the illustrated example) elastic arm portions 31c that connect the support portion 31a and the valve portion 31b in an arc shape, and are provided on both sides of these elastic arm portions 31c. When the valve portion 31b is opened, The slit 34d is formed between the hole 34 and the pump chamber 23. A plurality of radially extending fixed pieces 36 are extended on the support portion 31 a, and the support portion 31 a is fixed to the valve seat member 30 by embedding the outer peripheral portion of the valve seat member 30 with these fixed pieces 36.

図２及び図５に示すように，吐出弁装置２７は第１及び第２吐出弁３８，３９より構成される。第１吐出弁３８は，ポンプ室２３を囲むようにシリンダブロック１０の端面に形成される弁座４０と，この弁座４０に着座し得る剛性弁板４１と，吐出室２６に縮設されて剛性弁板４１を弁座４０との着座方向に付勢する閉じばね４２とで構成される。 As shown in FIGS. 2 and 5, the discharge valve device 27 includes first and second discharge valves 38 and 39. The first discharge valve 38 is contracted by the valve seat 40 formed on the end surface of the cylinder block 10 so as to surround the pump chamber 23, a rigid valve plate 41 that can be seated on the valve seat 40, and the discharge chamber 26. It comprises a closing spring 42 that biases the rigid valve plate 41 in the seating direction with the valve seat 40.

第２吐出弁３９は，剛性弁板４１の中心部に設けられてポンプ室２３及び吐出室２６間を連通する弁孔４５と，剛性弁板４１の外端面側で弁孔４５を開閉する薄鋼板製の弾性弁板４６とで構成され，その弾性弁板４６は薄鋼板製であって，剛性弁板４１の外周部に前記閉じばね４２の付勢力により押圧固定される環状の支持部４６ａと，剛性弁板４１の外端面側で弁孔４５を開閉する弁部４６ｂと，この弁部４６ｂと同心の円弧状をなして前記支持部４６ａ及び弁部４６ｂ間を連結する複数本（図示例では２本）の弾性腕部４６ｃと，これら弾性腕部４６ｃの両側に設けられ，弁部４６ｂの開き時，弁孔４５及び吐出室２６間を導通させるスリット４６ｄとで構成される。而して，弾性弁板４６の開弁圧力は，剛性弁板４１の開弁圧力よりも低く設定される。 The second discharge valve 39 is provided in the center of the rigid valve plate 41 and communicates between the pump chamber 23 and the discharge chamber 26 and a thin valve that opens and closes the valve hole 45 on the outer end surface side of the rigid valve plate 41. The elastic valve plate 46 is made of a steel plate, and the elastic valve plate 46 is made of a thin steel plate. The annular support portion 46a is pressed and fixed to the outer peripheral portion of the rigid valve plate 41 by the biasing force of the closing spring 42. And a valve part 46b for opening and closing the valve hole 45 on the outer end face side of the rigid valve plate 41, and a plurality of pipes connecting the support part 46a and the valve part 46b concentrically with the valve part 46b (see FIG. In the example shown, there are two elastic arm portions 46c, and slits 46d that are provided on both sides of these elastic arm portions 46c and connect between the valve hole 45 and the discharge chamber 26 when the valve portion 46b is opened. Thus, the valve opening pressure of the elastic valve plate 46 is set lower than the valve opening pressure of the rigid valve plate 41.

再び図１において，筒状容器１の一端壁には，冷蔵庫のエバポレータの出口側に接続される低圧管４８と，冷蔵庫のコンデンサの入口に接続される高圧管４９が取り付けられる。低圧管４８の内端は筒状容器１内に開口しており，低圧管４８を通過した冷媒ガスは筒状容器１内に解放され，そして前記第１及び第２取り付けフランジ１１，１３に固定される連通管５０に流入し，さらにシリンダブロック１０及びコアポール５間の筒状通路５１を経てコイル支持体１８の内側に移り，端壁１８ｂの通孔２０，圧縮機本体２内を経てピストン１７の吸入ポート２４に至るようになっている。 Referring again to FIG. 1, a low-pressure pipe 48 connected to the outlet side of the evaporator of the refrigerator and a high-pressure pipe 49 connected to the inlet of the condenser of the refrigerator are attached to one end wall of the cylindrical container 1. The inner end of the low-pressure pipe 48 opens into the cylindrical container 1, and the refrigerant gas that has passed through the low-pressure pipe 48 is released into the cylindrical container 1 and fixed to the first and second mounting flanges 11 and 13. And then into the coil support 18 through a cylindrical passage 51 between the cylinder block 10 and the core pole 5, and through the through hole 20 of the end wall 18 b and the inside of the compressor body 2, the piston 17. To the intake port 24.

一方，高圧管４９は，筒状容器１に固定される第１端部４９ａと，前記第２取り付けフランジ１３に固定される第２端部４９ｂと，これら第１及び第２端部４９ａ，４９ｂ間を連結する螺旋状の可撓中間部４９ｃとで構成され，その第２端部４９ｂは，前記第１及び第２取り付けフランジ１１，１３間の連通路５２を介して前記吐出室２６と連通する。 On the other hand, the high-pressure tube 49 includes a first end 49a fixed to the cylindrical container 1, a second end 49b fixed to the second mounting flange 13, and the first and second ends 49a and 49b. The second end portion 49b communicates with the discharge chamber 26 via the communication passage 52 between the first and second mounting flanges 11 and 13. To do.

次に，この実施例の作用について説明する。 Next, the operation of this embodiment will be described.

駆動コイル１９に交番電流を流すと，その交番電流の極性に応じてピストン１７が駆動コイル１９と共に左右に往復動し，このピストン１７の往復動は左右の共振ばね２１により増幅される。こうして増幅されたピストン１７の往復動，即ち吸入行程（図１では右動行程）と吐出行程（図１では左動行程）を繰り返し，その吸入行程では，ポンプ室２３の吸入作用により吸入弁２５が開弁して，低圧管４８から吸入ポート２４に到達した冷媒ガスがポンプ室２３に吸入され，次の吐出行程では，ポンプ室２３の吐出作用により弾性弁板４６が開弁して，ポンプ室２３の冷媒ガスが吐出室２６に吐出され，そして高圧管４９へと圧送される。 When an alternating current is passed through the drive coil 19, the piston 17 reciprocates left and right together with the drive coil 19 according to the polarity of the alternating current, and the reciprocating motion of the piston 17 is amplified by the left and right resonance springs 21. The reciprocating movement of the piston 17 thus amplified, that is, the suction stroke (right movement stroke in FIG. 1) and the discharge stroke (left movement stroke in FIG. 1) are repeated. In the suction stroke, the suction valve 25 is drawn by the suction action of the pump chamber 23. Is opened, the refrigerant gas reaching the suction port 24 from the low pressure pipe 48 is sucked into the pump chamber 23, and in the next discharge stroke, the elastic valve plate 46 is opened by the discharge action of the pump chamber 23, and the pump The refrigerant gas in the chamber 23 is discharged into the discharge chamber 26 and is pumped to the high pressure pipe 49.

ところで，吸入弁２５は，ピストン１７の頭部端面の凹部３３に収容，固着される弁座部材３０と，ピストン１７の頭部端面と共に略一平面を形成するように弁座部材３０に固着される弾性弁板３１とで構成されるので，ピストン１７の頭部にはデッドスペースが殆どなくなり，ピストン１７の圧縮行程時，ポンプ室２３の体積効率を効果的に高めることができ，したがってポンプ効率の向上を図ることができる。 By the way, the intake valve 25 is fixed to the valve seat member 30 so as to form a substantially flat surface together with the valve seat member 30 received and fixed in the recess 33 on the head end surface of the piston 17 and the head end surface of the piston 17. Therefore, there is almost no dead space in the head of the piston 17, and the volumetric efficiency of the pump chamber 23 can be effectively increased during the compression stroke of the piston 17, so that the pump efficiency is improved. Can be improved.

またこの吸入弁２５の弾性弁板３１は，弁座部材３０の外周部に固着される環状の支持部３１ａと，弁座部材３０の弁孔３４を開閉する弁部３１ｂと，この弁部３１ｂと同心の円弧状をなして支持部３１ａ及び弁部３１ｂ間を連結する複数の弾性腕部３１ｃと，これら弾性腕部３１ｃの両側に設けられ，前記弁部３１ｂの開き時，前記弁孔３４及びポンプ室２３間を導通させるスリット３１ｄとで構成されるので，弁部３１ｂは慣性重量が小さいことから，弁座部材３０への着座音が極めて小さく，吸入弁２５の静粛性を確保することができる。しかも弁部３１ｂの開き時，図４に示すように，弁孔３４を通過した冷媒ガスは，弁部３１ｂに当たった後，弁部３１ｂと同心の円弧状をなすスリット３１ｄからポンプ室２３に移行することで，放射状に広がることになるため，冷媒ガスに含まれる潤滑オイルをシリンダ孔１５内周面に衝突，付着分離させることができると共に，その潤滑オイルによりシリンダ孔１５内側面のピストン１７との摺動部の潤滑を行うことができる。 Further, the elastic valve plate 31 of the intake valve 25 includes an annular support portion 31a fixed to the outer peripheral portion of the valve seat member 30, a valve portion 31b for opening and closing the valve hole 34 of the valve seat member 30, and the valve portion 31b. And a plurality of elastic arm portions 31c connecting the support portion 31a and the valve portion 31b in a concentric arc shape, and provided on both sides of the elastic arm portions 31c. When the valve portion 31b is opened, the valve hole 34 is provided. Since the valve portion 31b has a small inertia weight, the seating noise on the valve seat member 30 is extremely small and the quietness of the intake valve 25 is ensured. Can do. Moreover, when the valve portion 31b is opened, as shown in FIG. 4, the refrigerant gas that has passed through the valve hole 34 strikes the valve portion 31b, and then enters the pump chamber 23 from a slit 31d that is concentric with the valve portion 31b. By shifting, the oil spreads radially, so that the lubricating oil contained in the refrigerant gas can collide with and adhere to the inner peripheral surface of the cylinder hole 15, and the piston 17 on the inner surface of the cylinder hole 15 can be separated by the lubricating oil. The sliding part can be lubricated.

また弁座部材３０には，ピストン１７の内周面より突出した環状突起３２の内周側を貫通する円筒状のかしめ部３５が形成され，このかしめ部３５を半径方向外方にかしめて，このかしめ部３５と弁座部材３０とで環状突起３２を挟持することで，弁座部材３０は，ピストン１７に固着されるので，弁座部材３０の取り付け部がポンプ室２３側に突出することを防ぎ，ポンプ室２３の体積効率の向上に寄与し得る。 Further, the valve seat member 30 is formed with a cylindrical caulking portion 35 penetrating the inner peripheral side of the annular protrusion 32 protruding from the inner peripheral surface of the piston 17, and the caulking portion 35 is caulked outward in the radial direction. By clamping the annular protrusion 32 between the caulking portion 35 and the valve seat member 30, the valve seat member 30 is fixed to the piston 17, so that the attachment portion of the valve seat member 30 protrudes toward the pump chamber 23. This can contribute to the improvement of the volumetric efficiency of the pump chamber 23.

また弾性弁板３１においては，支持部３１ａの外周から半径方向に突出する複数の固定片３６が延設され，これら固定片３６により前記弁座部材３０の外周部を抱き込むことにより，支持部３１ａは弁座部材３０に固着されるので，弾性弁板３１の取り付け部がポンプ室２３側に突出することを防ぎ，これもポンプ室２３の体積効率の向上に寄与し得る。 Further, in the elastic valve plate 31, a plurality of fixing pieces 36 projecting in the radial direction from the outer periphery of the support portion 31a are extended, and by holding the outer peripheral portion of the valve seat member 30 by these fixing pieces 36, the support portion Since 31 a is fixed to the valve seat member 30, the attachment portion of the elastic valve plate 31 is prevented from protruding toward the pump chamber 23, which can also contribute to the improvement of the volume efficiency of the pump chamber 23.

一方，吐出弁装置２７は第１及び第２吐出弁３８，３９より構成され，第２吐出弁３９の弾性弁板４６の開弁圧力は，第１吐出弁３８の剛性弁板４１の開弁圧力よりも低く設定されるので，ピストン１７の通常の往復行程時には，弾性弁板４６の開閉により，ポンプ室２３から吐出室２６へと冷媒ガスを送ることができる。しかも，弾性弁板４６は，剛性弁板４１の外周部に閉じばね４２の付勢力により押圧固定される環状の支持部４６ａと，剛性弁板４１の外端面側で弁孔４５を開閉する弁部４６ｂと，この弁部４６ｂと同心の円弧状をなして支持部４６ａ及び弁部４６ｂ間を連結する複数の弾性腕部４６ｃと，これら弾性腕部４６ｃの両側に設けられ，弁部４６ｂの開き時，弁孔４５及び吐出室２６間を導通させるスリット４６ｄとで構成されるので，弁部４６ｂは慣性重量が小さいことから，剛性弁板４１への着座音が極めて小さく，吐出弁装置２７の静粛性を確保することができる。 On the other hand, the discharge valve device 27 includes first and second discharge valves 38 and 39, and the valve opening pressure of the elastic valve plate 46 of the second discharge valve 39 is set to open the rigid valve plate 41 of the first discharge valve 38. Since the pressure is set lower than the pressure, the refrigerant gas can be sent from the pump chamber 23 to the discharge chamber 26 by opening and closing the elastic valve plate 46 during the normal reciprocating stroke of the piston 17. In addition, the elastic valve plate 46 is a valve that opens and closes the valve hole 45 on the outer end surface side of the rigid valve plate 41 and an annular support portion 46 a that is pressed and fixed to the outer peripheral portion of the rigid valve plate 41 by the biasing force of the spring 42. Part 46b, a plurality of elastic arm parts 46c concentric with the valve part 46b and connecting the support part 46a and the valve part 46b, and provided on both sides of the elastic arm part 46c. Since the valve portion 46b has a small inertia weight, the seating sound on the rigid valve plate 41 is extremely small, and the discharge valve device 27 has a small inertia weight. The quietness of the can be ensured.

また第１吐出弁３８は，ポンプ室２３を囲むようにシリンダブロック１０の端面に形成される弁座４０と，この弁座４０に着座し得る剛性弁板４１と，吐出室２６に縮設されて剛性弁板４１を弁座４０との着座方向に付勢する閉じばね４２とで構成されるので，ピストン１７が圧縮行程時，オーバストロークした場合には，剛性弁板４１がピストン１７により閉じばね４２の付勢力に抗して押し開けられ，ピストン１７のオーバストロークが許容される。その際，弾性弁板４６は，閉じばね４２の付勢力により剛性弁板４１に密着保持されるので，損傷を受けることもない。 The first discharge valve 38 is contracted in the discharge chamber 26, a valve seat 40 formed on the end face of the cylinder block 10 so as to surround the pump chamber 23, a rigid valve plate 41 that can be seated on the valve seat 40, and the discharge chamber 26. Since the rigid valve plate 41 is composed of a closing spring 42 that urges the rigid valve plate 41 in the seating direction with respect to the valve seat 40, the rigid valve plate 41 is closed by the piston 17 when the piston 17 overstrokes during the compression stroke. The piston 17 is pushed open against the biasing force of the spring 42, and the overstroke of the piston 17 is allowed. At this time, since the elastic valve plate 46 is held in close contact with the rigid valve plate 41 by the biasing force of the closing spring 42, it is not damaged.

また弾性弁板３１の支持部３１ａの剛性弁板４１への固定に，第１吐出弁３８の閉じばね４２が使用されるので，弾性弁板３１の支持部３１ａの固定構造を簡素化することができる。 Further, since the closing spring 42 of the first discharge valve 38 is used for fixing the support portion 31a of the elastic valve plate 31 to the rigid valve plate 41, the structure for fixing the support portion 31a of the elastic valve plate 31 can be simplified. Can do.

図６及び図７は，吸入弁２５の弾性弁板３１の第１及び第２変形例を示すもので，図６の第１変形例では，支持部３１ａ及び弁部３１ｂ間を連結する弾性腕部３１ｃを，弁部３１ｂの周囲に等間隔で並ぶ３本とし，図７の第２変形例では，弾性腕部３１ｃを，弁部３１ｂの周囲に等間隔で並ぶ４本としたものである。このような弾性弁板３１の変形例は，第２吐出弁３９の弾性弁板４６にも適用することができる。 6 and 7 show first and second modified examples of the elastic valve plate 31 of the intake valve 25. In the first modified example of FIG. 6, an elastic arm connecting the support portion 31a and the valve portion 31b. The three portions 31c are arranged at regular intervals around the valve portion 31b. In the second modification of FIG. 7, the elastic arm portions 31c are arranged at four intervals around the valve portion 31b. . Such a modification of the elastic valve plate 31 can also be applied to the elastic valve plate 46 of the second discharge valve 39.

次に，図８〜図１０に示す本発明の第２実施形態について説明する。 Next, a second embodiment of the present invention shown in FIGS. 8 to 10 will be described.

振動型圧縮機Ｃの筒状容器１は，バレル１ａと，その両端に結合される左右一対のキャップ１ｂとよりなっており，そのバレル１ａには，その内部を二分する隔壁５５と，この隔壁５５の両端面より突出する左右一対の筒状コアポール５６とが一体に形成される。これらコアポール５６の内周には，同軸状に配置される左右一対のシリンダブロック１０がボルト５７によりそれぞれ固着される。また一対のコアポール５６の外周面には左右一対の永久磁石７がヨーク５８を介して固定される。 The cylindrical container 1 of the vibration type compressor C includes a barrel 1a and a pair of left and right caps 1b coupled to both ends thereof. The barrel 1a includes a partition wall 55 that bisects the inside, and the partition wall. A pair of left and right cylindrical core poles 56 projecting from both end faces of 55 are integrally formed. A pair of left and right cylinder blocks 10 arranged coaxially are fixed to the inner periphery of these core poles 56 by bolts 57, respectively. A pair of left and right permanent magnets 7 are fixed to the outer peripheral surfaces of the pair of core poles 56 via yokes 58.

一対のシリンダブロック１０のシリンダ孔１５には，頭部を互いに対向させる左右一対のピストン１７が嵌装され，これらピストン１７の後端には，一対の永久磁石７を囲繞する一対の駆動コイル１９を支持する一対のコイル支持体５９が連結される。また一対のコイル支持体５９は，共振ばね６０を介して筒状容器１に支持される。図１０に示すように，共振ばね６０は，中間部が湾曲した帯状をなす複数の板ばねで構成され，その外周側端部は，バレル１ａ及びキャップ１ｂ間に挟持される。 A pair of left and right pistons 17 whose heads are opposed to each other are fitted in the cylinder holes 15 of the pair of cylinder blocks 10, and a pair of drive coils 19 surrounding the pair of permanent magnets 7 at the rear ends of the pistons 17. Are connected to each other. The pair of coil supports 59 are supported by the cylindrical container 1 via the resonance spring 60. As shown in FIG. 10, the resonance spring 60 is composed of a plurality of leaf springs having a band shape with a curved middle portion, and the outer peripheral end portion is sandwiched between the barrel 1a and the cap 1b.

各ピストン１７の頭部には，前実施形態と同様構成の吸入弁２５が取り付けられる。また各シリンダブロック１０の前端部には吐出弁装置２７が取り付けられ，吐出室２６は，コアポール５６内に左右のシリンダブロック１０を囲むように共通に設けられる。 A suction valve 25 having the same configuration as that of the previous embodiment is attached to the head of each piston 17. A discharge valve device 27 is attached to the front end of each cylinder block 10, and the discharge chamber 26 is provided in common in the core pole 56 so as to surround the left and right cylinder blocks 10.

吐出弁装置２７は，前実施形態と同様に第１及び第２吐出弁３８，３９よりなっているが，第１吐出弁３８において，前実施形態とは次のように相違する。即ち，図９に明示するように，各シリンダブロック１０の前端部外周にガイド部材６１が摺動可能に嵌合され，このガイド部材６１に，シリンダブロック１０の弁座４０と協働して剛性弁板４１及び弾性弁板４６を挟持し得る内向き鍔部６１ａが設けられる。そして左右のガイド部材６１は，共通の閉じばね４２付勢力により，それぞれ対応する剛性弁板４１及び弾性弁板４６と共に弁座４０側に付勢される。 The discharge valve device 27 includes first and second discharge valves 38 and 39 as in the previous embodiment, but the first discharge valve 38 differs from the previous embodiment as follows. That is, as clearly shown in FIG. 9, a guide member 61 is slidably fitted on the outer periphery of the front end of each cylinder block 10, and the guide member 61 is rigid in cooperation with the valve seat 40 of the cylinder block 10. An inward flange 61a that can sandwich the valve plate 41 and the elastic valve plate 46 is provided. The left and right guide members 61 are urged toward the valve seat 40 together with the corresponding rigid valve plate 41 and elastic valve plate 46 by a common closing spring 42 urging force.

バレル１ａの隔壁５５には，エバポレータの出口に連なる共通の低圧通路６２が設けられ，この低圧通路６２を通った冷媒ガスは，隔壁５５の左右両側へ分かれて左右のピストン１７内側の吸入ポート２４に達するようになっている。 The partition wall 55 of the barrel 1a is provided with a common low-pressure passage 62 connected to the outlet of the evaporator. The refrigerant gas passing through the low-pressure passage 62 is divided into the left and right sides of the partition wall 55, and the suction ports 24 inside the left and right pistons 17 are provided. To come to reach.

また隔壁５５には，吐出室２６に開口すると共に，コンデンサの入口に連なる共通の高圧通路６３が設けられる。 The partition wall 55 is provided with a common high-pressure passage 63 that opens to the discharge chamber 26 and communicates with the condenser inlet.

尚，図８〜図１０中，前記第１実施形態と対応する部分には同一の参照符号を付して，重複する説明を省略する。 In FIG. 8 to FIG. 10, the same reference numerals are assigned to the portions corresponding to those of the first embodiment, and the overlapping description is omitted.

而して，左右の駆動コイル１９に逆位相の交番電流を流すと，左右のピストン１７が対応する駆動コイル１９と共に，互いに反対方向に往復動し，各ピストン１７の往復動は，対応する共振ばね６０により増幅される。その際，左右のピストン１７は，互いに反対方向に移動するので，左右のピストン１７の慣性力が互いに打ち消し合うことになり，振動型圧縮機Ｃの振動を効果的に低減することができる。 Thus, when an alternating current of opposite phase is supplied to the left and right drive coils 19, the left and right pistons 17 reciprocate in opposite directions together with the corresponding drive coils 19, and the reciprocation of each piston 17 corresponds to the corresponding resonance. Amplified by the spring 60. At that time, since the left and right pistons 17 move in opposite directions, the inertial forces of the left and right pistons 17 cancel each other, and the vibration of the vibration type compressor C can be effectively reduced.

そして各ピストン１７の吸入行程では，前実施形態の場合と同様にポンプ室２３の吸入作用により吸入弁２５が開弁して，低圧通路６２から吸入ポート２４に到達した冷媒ガスがポンプ室２３に吸入され，次の吐出行程では，ポンプ室２３の吐出作用により吐出弁装置２７の第２吐出弁３９が開弁して，ポンプ室２３の冷媒ガスが吐出室２６に吐出され，そして高圧通路６３へと圧送される。 In the suction stroke of each piston 17, the suction valve 25 is opened by the suction action of the pump chamber 23 as in the previous embodiment, and the refrigerant gas that has reached the suction port 24 from the low-pressure passage 62 enters the pump chamber 23. In the next discharge stroke, the second discharge valve 39 of the discharge valve device 27 is opened by the discharge action of the pump chamber 23, the refrigerant gas in the pump chamber 23 is discharged to the discharge chamber 26, and the high-pressure passage 63. Pumped to

各ピストン１７が圧縮行程時にオーバストロークして，剛性弁板４１を突き上げた場合には，ガイド部材６１がシリンダブロック１０に対して摺動するので，ガイド部材６１に支持される剛性弁板４１及び弾性弁板４６の姿勢を安定させることができる。 When each piston 17 overstrokes during the compression stroke and pushes up the rigid valve plate 41, the guide member 61 slides with respect to the cylinder block 10, so that the rigid valve plate 41 supported by the guide member 61 and The posture of the elastic valve plate 46 can be stabilized.

以上，本発明の実施形態について説明したが，本発明はそれに限定されることなく，その要旨を逸脱しない範囲で種々の設計変更が可能である。例えば，吸入弁２５の弾性弁板３１の複数の固定片３６を円周状連続した環状の固定壁として，これを全周にわたり弁座部材３０の裏側にかしめて支持部３１ａを弁座部材３０に固着することもできる。 Although the embodiments of the present invention have been described above, the present invention is not limited thereto, and various design changes can be made without departing from the scope of the present invention. For example, a plurality of fixed pieces 36 of the elastic valve plate 31 of the intake valve 25 are used as an annular fixed wall which is continuous in a circumferential shape, and this is caulked on the back side of the valve seat member 30 over the entire periphery, thereby supporting the support portion 31a. It can also be fixed to.

Ｃ・・・・・振動型圧縮機
１０・・・・シリンダブロック
１５・・・・シリンダ孔
１７・・・・ピストン
１９・・・・振動源（駆動コイル）
２３・・・・ポンプ室
２４・・・・吸入ポート
２５・・・・吸入弁
２６・・・・吐出室
２７・・・・吐出弁装置
３８・・・・第１吐出弁
３９・・・・第２吐出弁
４０・・・・弁座
４１・・・・剛性弁板
４２・・・・閉じばね
４５・・・・弁孔
４６・・・・弾性弁板
４６ａ・・・支持部
４６ｂ・・・弁部
４６ｃ・・・弾性腕部４６ｄ・・・スリット
６１・・・・ガイド部材
６１ａ・・・内向き鍔部 C: Vibration compressor 10 ... Cylinder block 15 ... Cylinder hole 17 ... Piston 19 ... Vibration source (drive coil)
23 .... Pump chamber 24 ... Suction port 25 ... Suction valve 26 ... Discharge chamber 27 ... Discharge valve device 38 ... First discharge valve 39 ... Second discharge valve 40 ... Valve seat 41 ... Rigid valve plate 42 ... Closing spring 45 ... Valve hole 46 ... Elastic valve plate 46a ... Support portion 46b ... -Valve part 46c ... Elastic arm part 46d ... Slit 61 ... Guide member 61a ... Inward flange

Claims

シリンダブロック（１０）と，このシリンダブロック（１０）のシリンダ孔（１５）に往復動自在に嵌装されてシリンダ孔（１５）内にポンプ室（２３）を画成するピストン（１７）と，このピストン（１７）に往復振動を付与する振動源（１９）と，前記ポンプ室（２３）に隣接する吐出室（２６）と，ピストン（１７）に設けられる吸入ポート（２４）と，ピストン（１７）の往復動に応じて前記吸入ポート（２４）及びポンプ室（２３）間を開閉して，吸入ポート（２４）からポンプ室（２３）への一方向への気体の流れを生じさせる吸入弁（２５）と，ピストン（１７）の往復動に応じて前記ポンプ室（２３）及び吐出室（２６）間を開閉して，ポンプ室（２３）から吐出室（２６）への一方向への気体の流れを生じさせる吐出弁装置（２７）とを備える振動型圧縮機において，
前記吐出弁装置（２７）を第１及び第２吐出弁（３８，３９）より構成し，前記第１吐出弁（３８）を，前記ポンプ室（２３）を囲むようにシリンダブロック（１０）の端面に形成される弁座（４０）と，この弁座（４０）に着座し得る剛性弁板（４１）と，この剛性弁板（４１）を前記弁座（４０）との着座方向に付勢する閉じばね（４２）とで構成し，前記第２吐出弁（３９）を，前記剛性弁板（４１）の中心部に設けられて前記ポンプ室（２３）及び吐出室（２６）間を連通する弁孔（４５）と，前記剛性弁板（４１）の外端面側で前記弁孔（４５）を開閉する弾性弁板（４６）とで構成し，その弾性弁板（４６）を，前記剛性弁板（４１）の外周部に固定される環状の支持部（４６ａ）と，前記剛性弁板（４１）の外端面側で前記弁孔（４５）を開閉する弁部（４６ｂ）と，この弁部（４６ｂ）と同心の円弧状をなして前記支持部（４６ａ）及び弁部（４６ｂ）間を連結する複数の弾性腕部（４６ｃ）と，これら弾性腕部（４６ｃ）の両側に設けられ，前記弁部（４６ｂ）の開き時，前記弁孔（４５）及び吐出室（２６）間を導通させるスリット（４６ｄ）とで構成し，前記弾性弁板（４６）の開弁圧力を，前記剛性弁板（４１）の開弁圧力よりも低く設定したことを特徴とする振動型圧縮機。 A cylinder block (10), and a piston (17) that is reciprocally fitted in a cylinder hole (15) of the cylinder block (10) to define a pump chamber (23) in the cylinder hole (15); A vibration source (19) for applying reciprocating vibration to the piston (17), a discharge chamber (26) adjacent to the pump chamber (23), a suction port (24) provided in the piston (17), and a piston ( 17) Inhalation that opens and closes the suction port (24) and the pump chamber (23) in response to the reciprocating motion of 17) to generate a gas flow in one direction from the suction port (24) to the pump chamber (23). The pump chamber (23) and the discharge chamber (26) are opened and closed according to the reciprocating motion of the valve (25) and the piston (17), and the pump chamber (23) and the discharge chamber (26) are moved in one direction. Discharge valve device that generates gas flow (27) and the vibrating compressor comprising,
The discharge valve device (27) is composed of first and second discharge valves (38, 39), and the first discharge valve (38) is disposed in the cylinder block (10) so as to surround the pump chamber (23). A valve seat (40) formed on the end face, a rigid valve plate (41) that can be seated on the valve seat (40), and the rigid valve plate (41) are attached in the seating direction of the valve seat (40). The second discharge valve (39) is provided at the center of the rigid valve plate (41), and is provided between the pump chamber (23) and the discharge chamber (26). The valve hole (45) that communicates with the elastic valve plate (46) that opens and closes the valve hole (45) on the outer end face side of the rigid valve plate (41), and the elastic valve plate (46), An annular support portion (46a) fixed to the outer peripheral portion of the rigid valve plate (41), and the valve on the outer end surface side of the rigid valve plate (41). A valve part (46b) for opening and closing (45), and a plurality of elastic arm parts (46c) connecting the support part (46a) and the valve part (46b) in a circular arc shape concentric with the valve part (46b). ) And a slit (46d) provided on both sides of these elastic arm portions (46c), which conducts between the valve hole (45) and the discharge chamber (26) when the valve portion (46b) is opened. The vibration type compressor is characterized in that the valve opening pressure of the elastic valve plate (46) is set lower than the valve opening pressure of the rigid valve plate (41).

請求項１に記載の振動型圧縮機において，
前記閉じばね（４２）の付勢力により，前記支持部（４６ａ）を前記剛性弁板（４１）に押圧固定したことを特徴とする振動型圧縮機。 The vibration type compressor according to claim 1,
The vibration type compressor, wherein the supporting portion (46a) is pressed and fixed to the rigid valve plate (41) by the biasing force of the closing spring (42).

請求項２に記載の振動型圧縮機において，
シリンダブロック（１０）の端部外周に摺動可能に嵌合するガイド部材（６１）に，前記弁座（４０）と協働して前記剛性弁板（４１）及び弾性弁板（４６）を挟持し得る内向き鍔部（６１ａ）を設け，前記閉じばね（４２）の付勢力により，前記ガイド部材（６１）を前記剛性弁板（４１）及び弾性弁板（４６）と共に前記弁座（４０）側に付勢したことを特徴とする振動型圧縮機。 In the vibration type compressor according to claim 2,
The rigid valve plate (41) and the elastic valve plate (46) are connected to the guide member (61) slidably fitted to the outer periphery of the end of the cylinder block (10) in cooperation with the valve seat (40). An inward flange portion (61a) that can be clamped is provided, and the guide member (61) is moved together with the rigid valve plate (41) and the elastic valve plate (46) by the biasing force of the closing spring (42). 40) A vibration type compressor biased to the side.